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# Copyright (c) OpenMMLab. All rights reserved.
from mmdet.registry import TASK_UTILS
from .base_sampler import BaseSampler
@TASK_UTILS.register_module()
class CombinedSampler(BaseSampler):
"""A sampler that combines positive sampler and negative sampler."""
def __init__(self, pos_sampler, neg_sampler, **kwargs):
super(CombinedSampler, self).__init__(**kwargs)
self.pos_sampler = TASK_UTILS.build(pos_sampler, default_args=kwargs)
self.neg_sampler = TASK_UTILS.build(neg_sampler, default_args=kwargs)
def _sample_pos(self, **kwargs):
"""Sample positive samples."""
raise NotImplementedError
def _sample_neg(self, **kwargs):
"""Sample negative samples."""
raise NotImplementedError
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